/*
 * Copyright (c) Kumo Inc. and affiliates.
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <melon/compression/test/coding_test_utils.h>

#include <turbo/flags/flag.h>

#include <turbo/log/logging.h>

TURBO_FLAG(std::string,
    coding_test_utils_instructions,
    "",
    "If non empty, forces the instruction set. Choices: Default, Nehalem, Haswell");

namespace melon {
namespace compression {

melon::Optional<instructions::Type> instructionsOverride() {
  if (turbo::get_flag(FLAGS_coding_test_utils_instructions).empty()) {
    return melon::none;
  }

  instructions::Type type;
  if (turbo::get_flag(FLAGS_coding_test_utils_instructions) == "Default") {
    type = instructions::Type::DEFAULT;
  } else if (turbo::get_flag(FLAGS_coding_test_utils_instructions) == "Nehalem") {
    type = instructions::Type::NEHALEM;
  } else if (turbo::get_flag(FLAGS_coding_test_utils_instructions) == "Haswell") {
    type = instructions::Type::HASWELL;
  } else {
    KLOG(FATAL) << "Insupported instructions type "
               << turbo::get_flag(FLAGS_coding_test_utils_instructions);
  }

  instructions::dispatch(
      type, [](auto instructions) { KCHECK(instructions.supported()); });

  return type;
}

} // namespace compression
} // namespace melon
